Performance of broilers redneack fed cassava meal

This study aimed to evaluate the performance and carcass characteristics of rednecks chickens fed diets containing the cassava root meal in increasing levels of inclusion of 12, 24, 36 and 48%. 360 chicks male, lineage Label Rouge were used, with eight days old, in a completely randomized design with five treatments and six replications of 12 birds each. The birds were fed isocaloric and isonitrogenous from eight to 84 days. Was evaluated feed intake, weight gain and feed conversion. Were killed two birds per cage with 5% ± standard deviation of the mean weight of the cage for evaluation of carcass yield and retail cuts, wings, breast, drumstick, thigh, back, abdominal fat and edible offal (liver, heart and gizzard). Data were subjected to analysis of variance and regression at 5 % probability using the computer program SAS (2001). Concluded that there was a linear increase in weight gain of birds and feed intake with increasing levels of inclusion of the cassava root meal, can be used up to 48% in the diet without prejudice to animal performance.

本研究旨在评估日粮中添加不同梯度木薯根粉（cassava root meal）（添加水平分别为12%、24%、36%和48%）对红标鸡（Label Rouge）生长性能与屠宰特性的影响。试验选取360只8日龄雄性红标鸡雏鸡，采用完全随机试验设计，设置5个处理组，每组设6个重复，每个重复包含12只鸡。试验期为8至84日龄，试验日粮均为等能等氮日粮。测定指标包括采食量、日增重及料重比。以每笼鸡的平均体重为基准，选取处于±5%标准差范围内的2只鸡进行屠宰，用于评估屠宰率及各零售分割部位（翼部、胸部、胫部、腿部、背部、腹脂及可食用内脏（肝脏、心脏和肌胃））的占比。试验数据采用SAS（2001）统计软件进行方差分析，并在5%显著水平下开展回归分析。结果表明，随着日粮中木薯根粉添加水平的提升，肉鸡的日增重与采食量呈线性升高；当日粮木薯根粉添加水平最高达48%时，并未对肉鸡生长性能产生不利影响，因此该原料可安全添加至该水平。